noaa-cave-10445
Sanbao Cave, China Holocene Speleothem Oxygen Isotope Data
Dong, J.; Wang, Y.; Cheng, H.; Hardt, B.F.; Edwards, R.L.; Kong, X.; Wu, J.; Chen, S.; Liu, D.; Jiang, X.-Y.; Zhao, K.
Sanbao Cave, China Holocene Speleothem Oxygen Isotope Data
2010-03-13
NCDC-Paleoclimatology
ONLINE Files
Pending
https://www.ncdc.noaa.gov/paleo/study/10445
Investigator
J.
Dong
Investigator
Y.
Wang
Investigator
H.
Cheng
Investigator
B.F.
Hardt
Investigator
R.L.
Edwards
Investigator
X.
Kong
Investigator
J.
Wu
Investigator
S.
Chen
Investigator
D.
Liu
Investigator
X.-Y.
Jiang
Investigator
K.
Zhao
earth science
paleoclimate
speleothems
depth,null,null,millimeter,null,speleothems,null,null,N,null
earth science
paleoclimate
speleothems
age,null,null,calendar year before present,null,speleothems,null,null,N,null
earth science
paleoclimate
speleothems
delta 18O,calcium carbonate,null,per mil VPDB,null,speleothems,raw,isotope ratio mass spectrometry,N,null
earth science
paleoclimate
speleothems
oxygen isotopes
geoscientificInformation
Monsoon
13185 cal yr BP
70 cal yr BP
Complete
31.667
31.667
110.433
110.433
1900
1900
Continent
Asia
Eastern Asia
China
Sanbao Cave>LATITUDE 31.667>LONGITUDE 110.433
None
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English
DOC/NOAA/NESDIS/NCEI
National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
https://www.ncdc.noaa.gov/data-access/paleoclimatology-data
DATA Center Contact
Bruce
Bauer
bruce.a.bauer@noaa.gov
paleo@noaa.gov
303-497-6280
303-497-6513
325 Broadway, E/NE31
Boulder
CO
80305-3328
USA
online
ASCII
Dong, J., Y. Wang, H. Cheng, B. Hardt, R.L. Edwards, X. Kong,
J. Wu, S. Chen, D. Liu, X. Jiang, and K. Zhao. 2010.
A high-resolution stalagmite record of the Holocene East Asian
monsoon from Mt Shennongjia, central China.
The Holocene Vol. 20(2), pp. 257-264.
DOI: 10.1177/0959683609350393
High-resolution oxygen isotope (d18O) profiles of six stalagmites
from Sanbao Cave in Hubei province, central China, established with
1413 oxygen isotope data and 65 230Th ages, provide a continuous
history of East Asian Summer Monsoon (EASM) intensity for the period
from 13-0.2 thousand years before present (ky BP, relative to AD 1950).
The d18O record includes four distinct stages in the evolution of the
EASM: (1) an abrupt transition (~11.5 ky BP) into the Holocene;
(2) a period of gradual increase in monsoon intensity (11.5-9.5 ky BP);
(3) the maximum humid period (9.5-6.5 ky BP); and (4) a period of
gradual decline in monsoon intensity (6.5-0.2 ky BP). Comparison of
Sanbao with regional records of comparable resolution reveals
that the timing of the beginning and end of the Holocene Optimum
(as defined by the minimum in d18O) was similar in the Indian and
East Asian monsoon systems. This supports the idea that shifts in the
monsoon tied to shifts in the mean position of the Inter-Tropical
Convergence Zone (ITCZ) may control monsoon intensity throughout
the entire low-latitude region of Asia on orbital timescales.
This observation also supports the idea that the fluctuations in d18O
recorded across southern Asia reflect broad changes in the monsoon,
as opposed to local meteoric precipitation. The EASM records from
Sanbao largely follow orbital-scale insolation changes, yet exhibit
similar variability to Greenland ice core d18O on millennial to
centennial scales during the early to middle Holocene (r = 0.94).
STUDY NOTES: High-resolution oxygen isotope data and U/Th dating results
over the entire Holocene from 6 stalagmites collected in
Sanbao cave, Hubei province, central China.
Stalagmites sb43 and sb10 have hiatus at ~7700-6700 years BP
and ~3000-5700 years BP, respectively. Stalagmites sb26, sb27,
sb44, and sb49 have no hiatus. Spacing between samples is 2mm
for sb49 and sb44, and 1mm for the other samples.
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/sanbao2010.txt
GET DATA
https://www1.ncdc.noaa.gov/pub/data/paleo/speleothem/asia/china/sanbao2010.xls
USA/NOAA
DIF
Version 9.8.4
2019-02-20
2019-02-20